Abstract: Abstract: Reclamation is a key measure to ameliorate soil erosion from slopes in mining tailings. However, how rainfall intensity and different reclamation patterns combine to affect soil erosion remains elusive, especially in the loess plateau in China. We experimentally investigated these using artificial slopes in iron ore tailings as an example. The experiment was conducted in laboratory using a rainfall simulator. We compared three rainfall intensities, 60, 90 and120 mm/h, and five remediation methods: iron ore tailings without adding any amendment (T), overlaying the iron ore tailings with a high proportion of soil (TSH), planting mushroom in the iron ore tailings (TM), overlaying soil on the iron ore tailings and planting mushroom in the soil (TSM); overlaying a low proportion of soil on the iron ore tailings (TST). The experiment for each treatment was conducted in a 2 m × 1 m × 2.3 m soil flume, in which a layer of iron ore tailings 40 cm thick was underlaid by a 20 cm of above remediating substrate. The cultivar of the vegetation was Lespedeza bicolor Turcz. The angle between the soil flume to the horizontal was 25o. The soil water content in all treatments prior to rainfall was the same. During the experiment, we measured the water flow velocity and collected sediment samples after each three minutes to calculate the surface runoff and sediment erosion rate. The hydraulic parameters were also calculated in attempts to determine its impact on sediment erosion. The results showed: 1) The surface runoff rate increased asymptotically with time and it was higher in treatments with mushroom than those without mushroom. 2) The mushroom had a significant impact on sediment erosion. Regardless of rainfall density, the sediment erosion rate decreased with time in treatments with mushroom while increased with time in treatments without mushroom, especially in TSL. Soil erosion in T was most sensitive to rainfall intensity and it increased with rainfall intensity. 3) Water flow was laminar in most cases. Except in TSH under moderate and high rainfall intensity and T under high rainfall intensity where water flow was supercritical, water flow in other treatments was subcritical. The average infiltration depth in all treatments was shallow and ranged from 0.23 to 0.93 mm. The Manning roughness coefficient and the Darcy-Weisbach friction of the remediating substrates planted with mushroom were higher than that without mushroom. Mushroom reduced water velocity but increased the surface roughness compared to those without mushroom. 4) Splash erosion and shear erosion was the main cause of sediment erosion. 5) The runoff rate was linearly related to the stream power and to the Reynolds number with R2>0.998. The erosion rate was related to the steam power exponentially with R2>0.733 and to the Reynolds number in a power-law with R2>0.744. This study improves our understanding of how different mediating methods and rainfall density combine to impact surface runoff and sediment erosion in slopes in iron or tailings.